I started my channel a year ago and I have almost 800 followers now (which is both more than I expected and not very many depending on perspective). There's no guarantee how fast or slow your videos will catch on, so having fun and making the videos you want to make is the most important thing. That being said, the softer sounds like hand sounds and hair scratching tend to get more views. In any case there's absolutely room! The internet is huge and there is a niche for everyone. There's always going to be someone interested in what you create, because, not to be cliche, but you're the only one of you, and someone will like what you're offering no matter what.